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A020149 as a simple table

n a(n)
1 4
2 10
3 20
4 55
5 65
6 85
7 221
8 703
9 793
10 1045
11 1105
12 1852
13 2035
14 2465
15 3781
16 4630
17 5185
18 5473
19 5995
20 6541
21 7363
22 8695
23 8965
24 9061
25 10585
26 10945
27 11647
28 13019
29 13051
30 13981
31 14491
32 17767
33 18103
34 18721
35 19345
36 19669
37 19909
38 21667
39 22681
40 23155
41 24013
42 25465

[4,10,20,55,65,85,221,703,793,1045,1105,1852,2035,
 2465,3781,4630,5185,5473,5995,6541,7363,8695,8965,
 9061,10585,10945,11647,13019,13051,13981,14491,
 17767,18103,18721,19345,19669,19909,21667,22681,
 23155,24013,25465]

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Last modified September 14 12:31 EDT 2024. Contains 375921 sequences. (Running on oeis4.)